The ZM-362-AS is a neck worn condenser microphone that is designed exclusively for leader prayer in mosque (Imam) and other applications where constant body movement is unavailable. This product is equipped with an optional power that is selectable between battery and phantom power. The microphone position can be easily adjust near the mouth for best pick up. Specs : Power Sourcet3V DC (2x"AAA' batteries) or Phantom Power: 9~52V Microphone ElementtElectret Condenser Rated Impedancet600Ω, balanced Rated Sensitivityt-35 dB ± 3dB (1 kHz 0 dB=1 V/Pa) Frequency Response Mict60Hz - 20kHz Cable Lengtht7 m Output Connectort¼" balanced L plug 200mm FinishtBattery Case Unit, Switch Unit, Mic Unit : ABS Resin, Black Flexible Shaft : Copper Alloy, Black, Pant, Shield tube Wire Hanger : Steel wire shield rubber, Black, Paint Dimensionst260mm (H) x 135mm (W) Weightt190 g (without batteries)